Its something called a Zbot, by the name of Zeus. I guess it can be pretty malicious.
I wasnt in the argo thread either. It had to come from here. Didnt do any damage, my software caught it and contained it. My internet provider did see it somehow and warned me.

1) If it was a Zeus trojan, then you likely did not actually get the trojan from this website.

2) You probably already had it, and when it detected you logged into a website, it tried to write a file and was detected. It detects when you log into to sites to try and catch you logging into things like banking/shopping sites.